Answers
Answer:
x = 9 and -9
Step-by-step explanation:
[tex]x^{2}[/tex] -81 = x add 81 to both sides of the equation
[tex]x^{2}[/tex] = 81 What number times itself equals 81? 9 and -9
Answer: + 9
Step-by-step explanation: add 81 to both sides to isolate x^2. we get x^2= 81. take the square root of both sides. the square root of x^2 is x and square root of 81 is 9 or -9. so x = 9 and -9.
Related Questions
find the area of shaded region length 14cm breadth 14 cm
Answers
there is somthin more you need to say like for example that the thing in the middle is a circle
if i assume that it is a circle than the answer is this
(14×14)-(3.14)²×r r=7 cm the half of 14 cm
196-(3.14)²×7
196-9.9×7
196-69
127cm²
........-.--
Emma's family tooka road trip to Niagrara Falls. Emma slept through the last 21% of
the trip. If the total length of the trip was 600 miles, how many miles had they
travelled when Emma fell asleep?
Answers
Answer:
the last 126 miles emma slept
can someone please help me with these two questions! :( ill mark u as brainlest
Answers
Answer:
1.A by SSS axiom
2.F as angle A is 62*
please help if u can!!
The entry fee to a fun park is $20. Jackson spent a total of 35 at the park. If z represents the number of rides jackson went on, which equation represents the situation and what is the value of z that makes the equation true?
A= 2.50=35
x=14
B= 2.50z=20
x=8
C= 20z+2.50=35
c=2
D= 20+2.50z=35
x=6
Answers
Answer: The answer is d.
Step-by-step explanation:
If the entry amount is $20 then you want to subtract $20 from $35 and that leaves you with $15 now if you divide $15 in $2.50's you get 6
12. The name of each contestant is written on a separate card, the cards are
placed in a bag, and three names are picked from the bag. What of type
sampling is used? *
OA) Random
OB) Cluster
C) Convenience
OD) Stratified
E) Systematic
Answers
Answer:
Random
Step-by-step explanation:
The event that was picked from the bag is unbiased thus it will be a Random sample thus option (A) is correct.
What is sampling?Sampling is collecting some items in a lot randomly to predict opinions about the lot.
For example; the Selection of goods, selection of people
Sampling is a useful technique because if we do it for all samples then it will take time and cost as well.
As per the given,
The cards have different names and are put into a bag.
Since no group and same name are written on the cards thus it will be a purely unbiased situation.
Thus, it will be a random sample.
Hence "The event that was picked from the bag is unbiased thus it will be a Random sample".
To learn more about sampling,
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Niki Brought a patio set on sale for $480 the original price was $850 what was the rate of discount
Answers
If Niki Brought a patio set on sale for $480 the original price was $850, then the rate of discount is 43.52%
Given,
The original price = $850
The selling price = $480
We know discount amount is the difference between the original price and selling price
Discount amount = Original price - Selling price
Substitute the values in the equation
Discount amount =850-480
= $370
Then the discount percentage = (Discount amount ÷Original price )×100
Substitute the values in the equation
Discount percentage= [tex](\frac{370}{850})100[/tex]
=43.52%
Hence, if Niki Brought a patio set on sale for $480 the original price was $850, then the rate of discount is 43.52%
Learn more about discount percentage here
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2. Identify the property of equality that justifies the missing step to solve the given equation
Answers
Answer:
Subtraction property of equality
Step-by-step explanation:
Given the equation;
2x + (x+5) = 41
open the parenthesis;
2x+x + 5 = 41 (Associative property)
3x+5 = 41
Subtract 5 from both sides
3x + 5 = 41
3x + 5- 5 = 41 - 5 (Subtraction property of equality)
3x = 36
Divide both sides by 3;
3x/3 = 36/3
x = 12 (Division property of equality)
Hence the required property is Subtraction property of equality
A parking garage charges $2.00 for the first hour and $0.75 for each additional hour. If a customer gave the parking attendant $35 for parking from 10 AM to 3 PM, how much did the garage charge?
Which piece of information is not necessary to solve the problem?
$2.00 parking charges for the first hour
$0.75 parking charges for each additional hour
Amount of time the customer was parked
$35 the customer gave the parking attendant
Answers
I need help please!:D
Answers
Answer:
a 80
Step-by-step explanation:
7200 / 90 = 80
Evaluate
3
(
3
x
−
y
)
2
−
7
z
for
x
=
2
,
y
=
5
, and
z
=
6
.
Answers
Answer:
-36
Step-by-step explanation:
the ratio of hotdogs to hamburgers is 8:3. if 272 hotdogs were sold how many hamburgers were sold.
Answers
Answer:
102 hamburgers
Step-by-step explanation:
Hotdogs: 8 272
Hamburgers: 3 HB
8/3=272/HB
3*272=8HB
816=8HB
HB=102
Select each type of special quadrilateral that can meet the given condition.
Perpendicular Diagonals
Answers
Step-by-step explanation:
To find quadrilateral's you need to find shapes with edges.
Quadrilateral's:Square
Rectangle
Isosceles Trapezoid
The shape of quadrilateral ''Kite'' has Perpendicular Diagonals.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The condition is,
''Perpendicular Diagonals''
Now, We know that;
Kite has Perpendicular Diagonals.
Hence, The shape of quadrilateral ''Kite'' has Perpendicular Diagonals.
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PLS HELP!! ASAPPPPPPPP
Answers
The median age of the science teachers at Mike’s school is the same as the median age of the math teachers, but the ages of the math teachers show greater variability. Which statement most likely describes the data sets?
The difference in ages between the oldest and youngest math teachers is greater than the difference in ages between the oldest and youngest science teachers.
There are more math teachers than science teachers at Mike’s school.
The average age of the math teachers at Mike’s school is greater than the average age of the science teachers.
The oldest teacher in Mike’s school is a mathematics teacher.
Answers
Answer: A. The difference in ages between the oldest and youngest math teachers is greater than the difference in ages between the oldest and youngest science teachers.
Step-by-step explanation: on Edg 2020
Answer:
a
Step-by-step explanation:
What is the reciprocal of 5 in fraction
Answers
Answer:
The reciprocal of 5 is 1/5. Every number has a reciprocal except for 0. There is nothing you can multiply by 0 to create a product of 1, so it has no reciprocal. Reciprocals are used when dividing fractions.
Hope this helps have a good day and God bless! <3
What is the sign of the product (-5)(-3)(-8)(-6)? (5 points)
Answers
Answer:
750
Step-by-step explanation:
brainliest please
Answer: positive
Step-by-step explanation:
two negatives equals a positive
write in words international system: 708,195
Answers
Seven hundred eight thousand one hundred ninety-five.
Answer:
708,195
Step-by-step explanation:
well I think it's seven hundred and eighty thousand one hundred and ninety five
Solve each equation mentally. a. 5/2 x ? = 1
Answers
Answer:
1 is the answer why because its multiply both side 1
A tube has a radius of 9 inches and a height of 7 inches. What's its approximate volume?
Answers
Volume of a tube (cylinder) is
V= pi x radius^2 x height
V = 3.14 x 9^2 x 7
V = 3-14 x 81 x 7
V = 1780 inches cubed
What is the equation of the line that passes through the point (5,2) and has a slope
of –6/5
Answers
Answer:
5y+6x-40=0
Step-by-step explanation:
y-2=-6/5(x-5)
5y-10=-6(x-5)
5y-10=-6x+30
5y+6x-10-30=0
5y+6x-40=0
HELP ME HELP HELP HELP ME
Answers
Answer:
True ( A )
Step-by-step explanation:
4 ( 5 ) - 2 = 2 ( 5 ) + 8
20 - 2 = 10 + 8
18 = 18
This is a correct statement because 18 does equal 18
First add 2 to both sides
4x=2x+10
Then subtract 2x from both sides
2x=10
Now divide 2 from both sides
x=5
Therefore it’s true
write in standard from 8*1 +5*1/100 +9*1/1000
Answers
Answer:
8*1=8
5*1/100= 0.05
9*1/1000= 0.009
then 8+0.05+0.009= 8.059
Solve 4x - 7y ( x = 6, y = -4 ) *
Answers
[tex]4x-7y[/tex]
[tex]4(6)-7(-4)[/tex] ↦ Substitute given coordinate points in the equation (x = 6 and y = 4.)
[tex]24-(-28)[/tex] ↦ Multiply the number.
[tex]24+28[/tex] ↦ Negative multiply Negative will always be positive.
52 ↦ Answer.
Answer:
52
Step-by-step explanation:
4(6) = 24 and -7(-4) = 28
28+24=52
The diagram shows a triangle.
490
880
What is the value of v?
V =
Answers
Answer:
43°
Step-by-step explanation:
The first thing you should do is make the equation. We should know that the sum of all the angles is 180. So it should look like this...
[tex]49+88+x=180[/tex]
Combine like terms:
[tex]137+x=180[/tex]
Subtract the 137 on both sides:
[tex]x= 43[/tex]
That's it the value of v is 43°.
Answer:
the answer is 43
Step-by-step explanation:
this is so simple
the first thing that u have to remember or there is a rule
the rule is : that all the three angels added up equal to 180 degrees
so that means 88+49+v=180
88+49+v=180 first combine like terms
137+v=180 now subtract both sides by 137
v= 43
ANSWER CHECK
88+49= 137
137+ 43= 180
A number is divided by four. The result is added to five. This result is multiplied by three to give 27. What is the number?
Answers
The answer is 16
Explanation:16/4=4
4+5=9
9*3=27
Answer:
x=16
Step-by-step explanation:
We'll say that x represents the number.
3([tex]\frac{x}{4}[/tex]+5)=27 given equation
[tex]\frac{3x}{4}[/tex]+15=27 distributive property
3x/4=12 subtract
3x=48 multiply
x=16 divide
DOES ANYONE PLEASE KNOW? ANSWER IF YOU KNOW PLEASE
Answers
Answer:
The first equation.
Step-by-step explanation:
Answer:
m = -12.50, b = 1,500; The first option.
Step-by-step explanation:
To figure out the slope I used the equation, y1 - y2 / x1 - x2, to get the answer -12.50.
For the y-intercept ( b ), I just looked at the data table and where there was a zero in the X side of the Y there would be the, b, or y-intercept.
What is the answer for the question
Answers
PLEASE HELP ILL GIVE 5* AND THANKS
Answers
Each time 5 sticks are added. So pattern 6 would have 25 stickers added to the original 7 sticks equaling 32 sticks
B)n=5x+7
4.5 m
10
8
15 m
4.5 m
10 m
Answers
Answer:
242.5m2
Step-by-step explanation:
base of triangle=4.5m+4.5m+10m
=19m
area of triangle = 1/2 x 19mx15m
=142.5m2
area of square=10mx10m
=100m2
total area=100m+142.5m
=242.5m2
How can I simplify this?
Answers
Answer: [tex]\frac{\text{x}^{2n}-1}{\text{x}^n}[/tex]
This is equivalent to [tex]\frac{(\text{x}^{n}-1)(\text{x}^{n}+1)}{\text{x}^n}[/tex]
See the attachment below for the steps.